CN-116989375-B - Combined supply system and controller and control method thereof

Abstract

The application discloses a combined supply system, a controller and a control method thereof, wherein the combined supply system comprises a first heat source, and the control method of the combined supply system comprises the following steps of controlling the first heat source to supply hot water load until the hot water load is met by the first heat source, changing the running state of the first heat source when the hot water load is met by the first heat source and the requirement on heating load exists, supplying the heating load on the basis of enabling the hot water load to be met, or controlling the first heat source to supply heating load until the heating load is met by the first heat source, changing the running state of the first heat source when the heating load is met by the first heat source and the requirement on the hot water load exists, and supplying the hot water load on the basis of enabling the heating load to be met. The combined supply system of the application can intelligently supply hot water load and heating load.

Inventors

• QIAO XIAOGUANG
• ZHAO DEWEI
• HUANG QIANG

Assignees

• 艾欧史密斯(中国)热水器有限公司

Dates

Publication Date

20260505

Application Date

20220425

Claims (20)

1. 1. The control method of the combined supply system is characterized in that the combined supply system comprises a first heat source, a first runner and a second runner, wherein the first runner and the second runner can be communicated with the first heat source respectively; a first flow control means for controlling the flow of the fluid of the first heat source to the first and second flow passages for providing heat to the first and second ends, respectively, the first end for supplying a hot water load and the second end for supplying a heating load, a second heat source, third and fourth flow passages, respectively, communicable with the second heat source, a second flow control means for controlling the flow of the fluid of the second heat source to the third and fourth flow passages, respectively, the third and fourth flow passages for providing heat to the first and second ends, a second heat exchange means having a third heat exchange flow passage and a third heat exchange means having a fourth heat exchange flow passage, the third heat exchange means being in communication with the second heat exchange means, the first flow passage being in communication with the third heat exchange flow passage, the third flow passage being in communication with the fourth heat exchange passage, the second heat exchange means having a third water storage chamber for storing water, the third heat exchange means having a third water storage chamber for storing water, the first water storage cavity is communicated with the second water storage cavity, the third heat exchange flow channel can exchange heat with stored water in the first water storage cavity, the fourth heat exchange flow channel can exchange heat with stored water in the second water storage cavity, a water outlet of the second heat exchange device, which is communicated with the first water storage cavity, can be communicated with a water inlet of the third heat exchange device, which is communicated with the second water storage cavity, a water inlet of the second heat exchange device, which is communicated with the first water storage cavity, is used for being communicated with a water source, and a water outlet of the third heat exchange device, which is communicated with the second water storage cavity, is used for supplying hot water; The control method of the co-supply system comprises the following steps: controlling a first heat source to supply a hot water load until the hot water load is satisfied by the first heat source; changing an operation state of the first heat source when the hot water load is satisfied by the first heat source and there is a demand for a heating load, and supplying the heating load on the basis that the hot water load is satisfied; Or alternatively Controlling a first heat source to supply a heating load until the heating load is satisfied by the first heat source; When the heating load is satisfied by the first heat source and there is a demand for a hot water load, the operation state of the first heat source is changed, and the hot water load is supplied on the basis that the heating load is satisfied.
2. 2. The method of claim 1, wherein the first heat source includes at least two first sub heat sources connected in parallel, and the step of changing the operation state of the first heat source includes: And/or increasing the operating power of the first sub-heat source at least partially in operation.
3. 3. The control method of a co-generation system according to claim 2, wherein if there is the first sub-heat source that is not operated, an on-number of the first sub-heat sources that is not operated is determined based on a demand for a heating load or a demand for a hot water load, and the newly-turned-on first sub-heat source is used to supply the heating load on the basis that the hot water load is satisfied or supply the hot water load on the basis that the heating load is satisfied.
4. 4. The method of claim 2, wherein if all of the first sub-heat sources are turned on, increasing the operating power of at least some of the first sub-heat sources if the total operating power of all of the first sub-heat sources does not reach the total maximum rated power of all of the first sub-heat sources.
5. 5. The control method of a co-generation system according to claim 2, wherein if there is the first sub-heat source that is not operated and the total operating power of the first sub-heat source that is not operated cannot meet the newly existing heating load demand or the hot water load demand, when the total operating power of the first sub-heat source that is already in an operating state does not reach the total maximum rated power of the first sub-heat source that is already in an operating state, the first sub-heat source that is not operated is turned on and the operating power of at least part of the first sub-heat sources that is already in an operating state is increased.
6. 6. The method of claim 4 or 5, wherein changing the operation state of the first heat source further includes redistributing all the first sub heat sources that are already in operation so that the hot water load is partially supplied and the heating load is partially supplied.
7. 7. The method for controlling a co-generation system according to claim 1, wherein the first heat source includes at least two first sub heat sources connected in parallel, When the first heat source supplies the heating load and the heating load is a cold load, there is a demand for the hot water load, the step of changing the operation state of the first heat source includes: maintaining the number of the first sub-heat sources in the refrigeration working state unchanged, and if the first sub-heat sources which are not operated exist, using at least part of the first sub-heat sources which are not operated for supplying the hot water load; Or alternatively When the first heat source supplies the hot water load, there is a demand for the heating load, and the heating load is a cold load, the step of changing the operation state of the first heat source includes: the number of the first sub heat sources in the heating operation state is maintained unchanged, and if the first sub heat sources which are not operated exist, at least part of the first sub heat sources which are not operated are used for cooling to supply the heating load.
8. 8. The control method of a co-generation system according to any one of claims 1 to 5, 7, characterized in that the co-generation system further comprises a second heat source for satisfying at least the hot water load or the heating load; if the operation of the first heat source is more advantageous than the operation of the second heat source, Changing an operation state of the first heat source when the hot water load is satisfied by the first heat source and there is a demand for the heating load, and supplying the heating load on the basis that the hot water load is satisfied; Or alternatively When the heating load is satisfied by the first heat source and there is a demand for the hot water load, the operation state of the first heat source is changed, and the hot water load is supplied on the basis that the heating load is satisfied.
9. 9. The method of controlling a co-generation system according to claim 8, wherein the second heat source is operated if the heating load or the hot water load cannot be satisfied after the step of changing the operation state of the first heat source is performed.
10. 10. The control method of a co-generation system according to any one of claims 1 to 5, 7, characterized in that the co-generation system further comprises a second heat source for satisfying at least the hot water load or the heating load; When the hot water load is satisfied by the first heat source and there is a demand for the heating load, changing an operation state of the first heat source and operating the second heat source, and supplying the heating load on the basis of the hot water load being satisfied; Or alternatively When the heating load is satisfied by the first heat source and there is a demand for the hot water load, the operation state of the first heat source is changed and the second heat source is operated, and the hot water load is supplied on the basis that the heating load is satisfied.
11. 11. The method for controlling a co-generation system according to claim 10, wherein the step of changing the operation state of the first heat source and operating the second heat source to supply the hot water load on the basis that the heating load is satisfied, comprises: And controlling the first heat source to heat the water to a first preset temperature, and then controlling the second heat source to heat the water again.
12. 12. The control method of a co-generation system according to any one of claims 1 to 5, 7, characterized in that the co-generation system further comprises a second heat source for satisfying at least the hot water load or the heating load; if the operation of the second heat source is more advantageous than the operation of the first heat source, When the hot water load is satisfied by the first heat source and there is a demand for the heating load, preferentially operating the second heat source, and supplying the heating load on the basis that the hot water load is satisfied; Or alternatively When the heating load is satisfied by the first heat source and there is a demand for the hot water load, the second heat source is preferentially operated, and the hot water load is supplied on the basis that the heating load is satisfied.
13. 13. The method according to claim 12, wherein if the heating load or the hot water load is not satisfied after the step of preferentially operating the second heat source is performed, an operation state of the first heat source is changed to supply the heating load or the hot water load.
14. 14. The method of claim 8, wherein the first heat source comprises a heat pump or a gas water heater or an electric water heater, and the second heat source comprises a gas water heater or an electric water heater or a heat pump.
15. 15. The control method of a co-generation system according to any one of claims 2 to 5,7, characterized in that, after the step of supplying the heating load on the basis of making the hot water load satisfied, after the step of performing the change of the operation state of the first heat source, if the hot water load increases, the operation number of the first sub heat sources that supply the heating load is reduced for supplying the increased hot water load; Or alternatively After the step of supplying the hot water load on the basis of the heating load being satisfied, if the heating load increases, reducing the number of operations of the first sub-heat sources for supplying the hot water load for supplying the increased heating load, after the step of performing the changing the operation state of the first heat source.
16. 16. The control method of a co-feed system according to claim 15, further comprising a second heat source that is operated to supply the hot water load if the step of reducing the number of operations of the first sub heat source for supplying the hot water load is performed; Or if the step of reducing the number of operations of the first sub heat sources for supplying the heating load is performed, operating the second heat source to supply the heating load.
17. 17. A controller of a co-feed system, characterized in that the controller of the co-feed system performs the control method of the co-feed system according to any one of claims 1 to 16.
18. 18. A co-feed system, comprising a controller of the co-feed system as set forth in claim 17.
19. 19. The co-generation system of claim 18, wherein the first heat source comprises a plurality of first sub-heat sources, the plurality of first sub-heat sources being connected in parallel, the first flow control device comprising a plurality of first sub-flow control devices, the first flow path comprising a plurality of first sub-flow paths, the second flow path comprising a plurality of second sub-flow paths, the first sub-flow control devices for controlling the flow of fluid from the corresponding first sub-heat source to the corresponding first sub-flow paths and second sub-flow paths.
20. 20. The co-generation system of claim 18, wherein the second heat source comprises a plurality of second sub-heat sources connected in parallel, the second flow control device comprises a plurality of second sub-flow control devices, the third flow passage comprises a plurality of third sub-flow passages, the fourth flow passage comprises a plurality of fourth sub-flow passages, and the second sub-flow control devices are configured to control the flow of fluid from the corresponding second sub-heat source to the corresponding third and fourth sub-flow passages.

Description

Combined supply system and controller and control method thereof Technical Field The invention relates to the technical field of heat supply, in particular to a combined supply system, a controller and a control method thereof. Background The combined supply system can supply heat required by water heating and also can supply heat required by heating. Because the load of hot water required for heating water and the time required for heating are uncertain, and the load required for heating and the time required for heating are also uncertain, how to intelligently adjust the operation mode of the combined supply system so as to intelligently meet the load of hot water and the load of heating is a problem to be solved. Disclosure of Invention In order to overcome the above-mentioned drawbacks of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a co-generation system, and a controller and a control method thereof, which can ensure that the co-generation system can intelligently supply hot water load and heating load. The specific technical scheme of the embodiment of the invention is as follows: A control method of a co-generation system, the co-generation system including a first heat source, the control method of the co-generation system including the steps of: controlling a first heat source to supply a hot water load until the hot water load is satisfied by the first heat source; changing an operation state of the first heat source when the hot water load is satisfied by the first heat source and there is a demand for a heating load, and supplying the heating load on the basis that the hot water load is satisfied; Or alternatively Controlling a first heat source to supply a heating load until the heating load is satisfied by the first heat source; When the heating load is satisfied by the first heat source and there is a demand for a hot water load, the operation state of the first heat source is changed, and the hot water load is supplied on the basis that the heating load is satisfied. Preferably, the first heat source includes at least two first sub heat sources connected in parallel, and the step of changing the operation state of the first heat source includes: And/or increasing the operating power of the first sub-heat source at least partially in operation. Preferably, if there is the first sub-heat source that is not operated, the number of the first sub-heat sources that are not operated is determined based on the demand of the heating load or the demand of the hot water load, and the newly opened first sub-heat source is used to supply the heating load on the basis that the hot water load is satisfied or to supply the hot water load on the basis that the heating load is satisfied. Preferably, if all the first sub-heat sources are turned on, the total operating power of all the first sub-heat sources does not reach the total maximum rated power of all the first sub-heat sources, and at least part of the operating power of all the first sub-heat sources is increased. Preferably, if the first sub-heat source which is not operated exists, and the total operating power of the first sub-heat source which is not operated cannot meet the requirement of the newly existing heating load or the requirement of the hot water load, when the total operating power of the first sub-heat source which is already in the operating state does not reach the total maximum rated power of the first sub-heat source which is already in the operating state, the first sub-heat source which is not operated is started, and at least part of the operating power of the first sub-heat source which is already in the operating state is increased. Preferably, the changing the operation state of the first heat source further includes reassigning all the first sub heat sources that are already in operation so that the hot water load is partially supplied thereto and the heating load is partially supplied thereto. Preferably, the first heat source comprises at least two first sub heat sources connected in parallel, When the first heat source supplies the heating load and the heating load is a cold load, there is a demand for the hot water load, the step of changing the operation state of the first heat source includes: maintaining the number of the first sub-heat sources in the refrigeration working state unchanged, and if the first sub-heat sources which are not operated exist, using at least part of the first sub-heat sources which are not operated for supplying the hot water load; Or alternatively When the first heat source supplies the hot water load, there is a demand for the heating load, and the heating load is a cold load, the step of changing the operation state of the first heat source includes: the number of the first sub heat sources in the heating operation state is maintained unchanged, and if the first sub heat sources which are not operated exist, at least part of t